The SAT-3 is the one MOBO trailer that does not care whether there is power at the site. Rooftop solar and batteries run an 8.4 by 4.2 foot screen with no generator, no fuel runs and no shore power, which makes it the right answer for a specific and genuinely valuable set of jobs, and the wrong answer for most event work.
Where off-grid earns its keep
Each of these has the same shape: the screen has to keep working somewhere nobody is going to bring it fuel or run it a cable.
Case 01
When the grid is down and the fuel supply is strained, a solar trailer keeps displaying evacuation routing, shelter locations and boil-water notices. Independence from both the grid and the fuel chain is exactly the capability an emergency reveals you did or did not buy.
Case 02
A construction corridor, a park entrance, a trailhead, a roadside position held for weeks. A generator on that job is a fuel run every few days and a theft risk. Solar is a placement you set and leave.
Case 03
Remote lots, rural event grounds, undeveloped parcels, agricultural and festival sites where shore power simply does not exist and running a temporary service is not worth it for the duration.
Case 04
Residential-adjacent placements, overnight operation, and venues or jurisdictions with generator restrictions. Solar has no exhaust and no engine noise, which makes some positions available that otherwise are not.
The honest trade
We sell both, so we have no reason to oversell either. Solar buys independence and gives up scale. Here is the trade in plain terms.
| Factor | SAT-3 solar | Trailer with generator package |
|---|---|---|
| Screen area | 8.4' x 4.2', about 35 sq ft | 48 to 660 sq ft depending on model |
| Runtime | Depends on battery capacity, brightness and available sun | Unlimited while you can refuel |
| Fuel logistics | None | Regular fuel runs; a real operational cost |
| Works with grid down | Yes | Yes, while fuel is available |
| Noise and emissions | None | Super-silent options available, but not silent |
| Best for | Messaging, advertising, unattended placement | Events, video, crowds, IMAG |
| Wrong for | Movie nights, festivals, anything with an audience | Weeks-long unattended placement |
Buying solar because it sounds better and then discovering the screen is too small for your actual events. Thirty-five square feet is a messaging panel, not a video screen for a crowd. If you are running movie nights, festivals or watch parties, buy screen area and a generator package and do not look back. Solar is a capability purchase for a specific job, not a greener version of the same trailer.
Runtime on any solar system is a function of four things: battery capacity, screen brightness, content, and how much sun the panels collected. That means the honest answer to “how long will it run?” is a configuration answer, not a number on a brochure. Tell us how many hours a day the screen must stay lit, at what brightness, in which season and at what latitude, and whether anyone can reach the trailer to intervene. We will take that to the factory and come back with a straight answer, and if the answer is that solar will not cover your duty cycle, we will say so.
Figures reported by Providence Capital Funding. Approval is not guaranteed.
Specialty line
The solar SAT-3, the small-format Lite and double-sided units, and the LED golf cart for concourses and event grounds.
SAT-3 SolarBuilt to order8.4' x 4.2' · Solar powered and fully off grid. No fuel runs.
MB-5 LiteFrom $30,0009.84' x 4.92' · The entry point. Single-axle starter trailer with real MOBO hydraulics.
MB-5DFrom $36,500Two 9.84' x 4.92' · Two faces on one mast. Double the impressions from a single tow.
LED Golf CartBuilt to orderCustom sizes · Electric cart with integrated LED screen for concourses and event grounds.
All 15 MOBO modelsFull lineupEvery trailer, golf cart, and solar unit with specs, downloads, and pricing.
Frequently asked
If your question is not here, call or use the quote form and we will answer it straight.
Rooftop photovoltaic panels charge an onboard battery bank, and the battery bank runs the screen. There is no generator, no fuel and no shore power connection required. On the MOBO SAT-3 the entire power system is solar and batteries, which is what distinguishes it from the rest of the line, where solar is not offered and self-contained operation means an inverter or diesel generator.
8.4 by 4.2 feet, roughly 35 square feet. That is deliberately modest: screen area drives power draw, and power draw is the binding constraint on any solar system. The SAT-3 is a public messaging and advertising unit, not a video screen for a crowd. If you need to show a film or serve a festival audience, you need a larger trailer and a different power plan.
Runtime depends on battery capacity, screen brightness, content and how much sun the panels collected that day, so it is a configuration question rather than a single number. Tell us how many hours a day the screen must stay lit, at what brightness, and in which season and latitude, and we will get you a straight answer from the factory rather than a marketing figure. Conservative planning matters more on a solar unit than on any other trailer.
It is the strongest case for one. In an event where the grid is down and fuel is hard to get, a trailer that needs neither keeps displaying evacuation routing, shelter locations or boil-water notices. For a city or county weighing a mobile messaging asset against a hurricane, ice storm or wildfire scenario, independence from both the grid and the fuel supply chain is the whole point.
Whenever screen area or runtime is the priority. A larger trailer with a super-silent inverter or diesel generator gives you far more screen and unlimited runtime as long as you can refuel. Solar wins on unattended placement, on grid independence, and on eliminating fuel logistics; a generator wins on raw capability. Most event operators should buy the generator package.
Yes. The SAT-3 is built to order and quoted per configuration, and the municipal lease programme through Providence Capital Funding covers cities, school districts and other public entities with financing available up to $1,000,000. Approval and terms are set by the lender and are not guaranteed.
Off-grid messaging
Describe the placement: how long the screen needs to stay lit, whether anyone can get to it to refuel, and what happens if the grid is down. We will tell you whether the SAT-3 fits or whether a generator package on a larger trailer serves you better.
info@fullblastsound.com · San Antonio, TX
Important notice
The information on this page is provided for general educational and informational purposes only. It is not legal, tax, accounting, financial, insurance or other professional advice, and it is not an offer of credit or a solicitation. Fullblast Sound & Lights is an equipment dealer; we are not attorneys, accountants, tax advisors or lenders, and nothing here creates a professional or advisory relationship.
Laws, tax figures, regulations, local ordinances, licensing requirements, lender terms and third-party prices change and vary by jurisdiction and by individual circumstances. You should independently verify anything on this page and consult your own attorney, accountant, tax advisor, insurance agent and lender before acting on it. Figures attributed to our financing partner are theirs, and approval is never guaranteed. Prices and specifications are subject to change and are not an offer.
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